Christie’s charges a premium to the buyer on the Hammer Price of each lot sold at the following rates: 29.75% of the Hammer Price of each lot up to and including €5,000, plus 23.8% of the Hammer Price between €5,001 and €400,000, plus 14.28% of any amount in excess of €400,001. Buyer’s premium is calculated on the basis of each lot individually.
with S. Nijstad, The Hague, 1973.
W. Schulz, Herman Saftleven 1609-1685, Berlin/New York, 1982, p. 170, nos. 173-4, figs. 43-4.